Fix for https://github.com/pineconellc/angular-foundation/issues/61

[a-lucas]

The issue #61 is hard to replicate.

To replicate it, you need to have a very large page, with lots of data and controllers.
(I had this sisue with one page and 25 controllers who each inherits the same main profile controller )

On the directive init, attrs.active is true but unparsed.
The expression is complex and has to wait all the other controllers to initialize to get evaluated correctly.

getActive = $parse(attrs.active); 

takes time to parse, but at the same time, the $watch is triggered.

This means the 'setActive' function is undefined in the $watch for this specific case where the $parse takes too long to eval.

[jbrowning]

Thanks @a-lucas.

1. Please fix spacing
2. Angular provides angular.isFunction which would be useful here

[jbrowning]

Please convert your tabs to spaces as requested by Semaphore. 😉

[a-lucas]

@jbrowning all done, it took me a while because I was learning the whole phantomjs / karma / jasmine unit testing procedure in the last 2 weeks, and I took this complex project as a learning base.
Unit testing is awesome!

[jbrowning]

👍 Thanks for your contribution @a-lucas.